Katherine and beatrice are 20 miles apart when they start moving towards each other. katherine runs at a constant speed of 5 mph and beatrice walks at a constant speed of 3 mph. how long does it take them to meet

2 hours and 30 minutes.

Step-by-step explanation:

Katherine and Beatrice are 20 miles apart and they start to move towards each other.

It is given that Katherine runs at a constant speed of 5 mph and Beatrice walks at a constant speed of 3 mph.

As they are moving towards each other, so the resultant speed of them will be (5 + 3) = 8 miles per hour.

So, they will cover 20 miles distance with this 8 mph resultant speed.

Therefore, the time they will take to meet each other will be hours i.e. 2 hours and 30 minutes. (Answer)

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.

they used 313 gallons of paint